$ git clone -n https://src.fedoraproject.org/rpms/chunkah.git /var/lib/mock/f45-build-6724-350/root/chroot_tmpdir/scmroot/chunkah
Cloning into '/var/lib/mock/f45-build-6724-350/root/chroot_tmpdir/scmroot/chunkah'...
$ git fetch origin d47864cf531a7590f1b84db1434791b531a875b9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/chunkah
 * [new ref]         d47864cf531a7590f1b84db1434791b531a875b9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d47864c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild